Combination-tool



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JOHN HERMAN ALLEN, OF KEYSER, WEST VIRGINIA.

COMBINATION-TOOL.

SPECIFICATION forming part of Letters Patent No. 607,907, dated uly 26,1898,

Application filed December l, 1897. Serial No. 660,418. (No model.) l

To aZZ whom it may concern:

Be it known that I, JOHN HERMAN ALLEN, a citizen of the United States,residing at Keyser,in the county of Mineral and State of West Virginia,have invented certain new and useful Improvements in Combination-Tools,of which the following is a specification, reference being had thereinto the accompanying drawings.

My invention relates to improvements in a combination-tool whichcombines a small and large try-square, a tool for making circles orarcs, and a mitering-tool all in one implement.

The main object of my invention is the provision of a tool which can beadjusted at a moments notice to accomplishfthe ends to which itappertains, which is very compact and easily operated, and which issimple, durable, and cheap.

To attain the desired objects, the invention consists of a combinationtool embodying novel features of construction and combination ofparts,substantially as disclosed herein'.

Figure l represents a side elevation of my combination-tool with theblade folded, but

shown in dotted lines extended. Fig. 2 represents a side elevation of myimprovement with the blade in the position for laying off a square miterand having dotted lines showing the position it assumes when laying offan Octagon miter; and Fig. 3 is an end view of my improvement, showingthe construction and details in putting the same together.

In the drawings the 4numeral l designates the base of the try-square,and, 2 designates the long metallic arm, which is secured to the base byany well-known means and which has graduated scales 3 marked on itsinner side and having the conical-shaped openings 4 opposite thegraduated scales, in which is placed the point of a pencil, and when astraight line is to be drawn itis simply necessary to slide the base ofthe square along the edge of the plank and the pencilpoint will be drawnalong parallel with the try-square, making a straight parallel line.

Formed in the body of the arm 2 is the long slot 5, in which isadjustably secured the end of the blade 6 by means of the brass handle7, which passes through the slot and the opening 8 in the end of theblade. On the inner side of this folding blade is the graduated scale 9,which has the conical-shaped openin gs l0 op- Vposite said scales, andby placing a pencilpoint in one of these Openings and using the openingll as a center a circle or as many circles as desired may be drawn, or,in fact, any shaped figures, as the blade may be raised or lowered inthe slot or revolved around the center, and this blade when not in useis folded back, as shown in Fig. l. This blade when extended andsecurely held in line with the arm 2 forms part ofthe try-square andmakes the large one.

To lay off a miter of any angle or shape, it is simply necessary tobring the cut-away edge 12 of the folding blade down against the rivetsor pins 13 upon the base, said pins being placed in such positions as tocause the blade to lay Od a miter of any desired shape,4 such as squareor Octagon, as shown in Fig. 2.

y From this description, taken in connection with the drawings, it isplainly seen that my combination-tool can be used as a large or Smalltry-square by either closing or extending thefoldingblade.Acircle-describingtool is formed by the folding blade by revolving theblade upon its center and as a miteringtool by folding the bladebackward and having its free end abut against the mitering rivets orpins secured to the base of the square.

From this construction it will be clearly understood that I provide adevice of this character which is extremely simple, durable, andinexpensive, as well as very useful and practical.

I claimy In a tool, the combination of a small trysquare, the base ofwhich is formed with a recess or groove in which is secured an arm witha graduated scale marked thereon, also having conical-shaped openingstherethrough opposite the scales and a long slot in the body thereof, ofa folding arm having a graduated scale and conical-shaped openingstherethrough Opposite the scales, a pin for adjustably securing saidfolding arm in said long IOO forming a small trysquare, when the arm isIn testimony whereof I afx my signature folded, a large try-squaiiegliela ghe flding in presence of tWo Witnesses. arm is exten e a cireeeseri ing evce i when the folding arm is free to rotate upon JOHNHERMAN ALLEN' 5 the adjustable securing-pin, and a miter or Witnesses:

angle-finding device When the folding arm is ROBERT CALDWELL,restingupon the rivet in the base. l JOHN H. MIE'RS.

